دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the mass or weight of a substance per unit volume. For instance, the density of a drilling mud may be 10 pounds per gallon, 74.8 pounds/cubic foot, or 1,198.2 kilograms/cubic metre. Specific gravity, relative density, and API gravity are other units of density.

n: Mass per unit volume expressed in pounds per gallon (ppg),grams per cubic (g/cc),or pounds per cubic ft (lb/cu.ft). Drilling-fluid density is commonly referred to as mud weight.


the mass per volume of a substance. Density of fresh water is 8.33 pounds per gallon or 1 gram/cc.

n: the unit weight of a fluid, e.g., pounds per gallon.

The mass per volume density of a fluid.

n: a measure of the density of a drilling fluid expressed as pounds per gallon, pounds per cubic foot, or kilograms per cubic metre. Mud weight is directly related to the amount of pressure the column of drilling mud exerts at the bottom of the hole.

n: in mud terminology, this refers to the density of a drilling fluid. This normally expressed in either 1b/cuft, psi hydrostatic pressure per 1,000ft. Of depth.

mud density.

n pi: 1. value that indicates hook load or force, read from a weight indicator;1 point = 1,000 pounds, or 500 decanewtons. 2. in mud density measurement, the portion of the muds weight expressed in decimal points. For example, a mud that weighs 12.2 pounds per gallon (1,461.8 kilograms per cubic metre) weighs two points more than 12 pounds ( 1,438 kilograms). Also, if a 12.2 potmd-per-gallon muds density is increased to 12.5 pounds per gallon (1,497.8 kilograms per cubic metre),the density has been raised by 3 points.

n: (ppg) a measure of the density of a fluid (such as drilling mud).

n: a measure of the amount of pressure in pounds per square inch that a column of fluid (such as drilling mud) exerts on the bottom of the column for every foot of its length. For ex- ample, 10 pounds per gallon mud exerts 0.52 pounds per square inch per foot (11.8 kilopascals per metre),so a column of 10 pounds per gallon (1,198.2 kilograms per cubic metre) mud that is 1,000 feet (304.8 metres) long exerts 520 pounds per square inch (3.6 megapascals) at the bottom of the column. See pressure gradient.

abbr: pounds per gallon.

pounds per gallon. Usually used as a measure of additive, slurry or cleanout. Actually it is pounds of proppant in a gallon volume with liquid added to make up the gallon “space”.

pounds per gallon added. See PPG.

n: the density of a cement slurry, expressed in pounds per gallon, pounds per cubic foot, kilograms per litre, and so on.

n: The weight per volume slurry.